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Alkali feldspar

Pictures (636 Images total)

Sanidin
Views (Image: 1254743994): 8133
Sanidin

Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Stephan Wolfsried
Contribution: Hg 2009-10-05
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Orthoklas
Views (Image: 1275853244): 9099
Orthoklas

Fundort: Röthenbach,Vogtland,Sachsen, Deutschland Größe: 18 x 12 x 8 cm

Collection: Jochen1Knochen
Copyright: Jochen1Knochen
Contribution: Jochen1Knochen 2010-06-06
Locality: Röthenbach / Rodewisch / Vogtlandkreis / Sachsen / Deutschland
Fluorit, Mikroklin
Views (Image: 1356651682): 2175
Fluorit, Mikroklin

Größe: 47x31x30 mm; Fundort: Papachacra, Departamento Belen, Provinz Catamarca, Argentinien

Copyright: slugslayer
Contribution: slugslayer 2012-12-28
Locality: Papachacra / Belen, Departamento / Catamarca, Provinz / Argentinien
Sanidine
Views (Image: 1546193431): 3173
Sanidine

Perfect color and gem quality, naturally etched sanidine crystal, from Itrongay, Mahasoa East Commune, Betroka District, Anosy Region, Toliara Province, Madagascar; Dimensions: 32 mm x 18 mm x 16 mm

Copyright: pegmatite
Contribution: pegmatite 2018-12-30
Locality: Itrongay / Mahasoa East / Betroka, Distrikt / Anosy, Region / Madagaskar
Orthoklas xx
Views (Image: 1651505548): 127
Orthoklas xx

Orthoklas xx mit Chabasit xx aus dem Steinbruch Knaupsholz, Elbingerode, Oberharz am Brocken, Harz, Sachsen-Anhalt, DE: Stufenbreite ca.2,5cm

Collection: harzer
Copyright: harzer
Contribution: harzer 2022-05-02
Locality: Steinbruch Knaupsholz / Elbingerode / Oberharz am Brocken / Harz, Landkreis / Sachsen-Anhalt / Deutschland
Sanidin
Views (Image: 1200996889): 5609, Rating: 8.88
Sanidin

Bildbreite: 3 mm; Fundort: Niveligsberg, Kelberg, Eifel, Rheinland-Pfalz, Deutschland

Copyright: Stephan Wolfsried
Contribution: Hg 2008-01-22
Locality: Niveligsberg / Drees / Kelberg / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland

Additional information / Summary

Kalium- und Natrium-Feldspäte sind nur bei hohen Temperaturen mischbar und heißen Alkalifeldspäte.

Chemism

Min­eral sta­tus

Reihe/Gruppe/Serie/Folge

IMA Classification

IMA Clas­sifica­tion

Feldspar group

Image ⇒ Luminescence ⇒ excitation ⇒ UV shortwave ~254nm (1 Images total)

Orthoklas
Views (Image: 1587628331): 348
Orthoklas

Spaltstück, Feldspat vom inneren Nordfjord in Norwegen (5 x 3,5 x 1,5 cm). Kurzwelliges UV Licht und weißes Licht.

Collection: Ulrich
Copyright: Ulrich
Contribution: Ulrich 2020-04-23
Locality: Stryn / Vestland, Provinz / Norwegen

Crystal Structure 3D

Open larger view

IMA group assignments


 
 
 
 
 

 
 
 
(Na,K)AlSi3O8
triklin
C1

 
 
 
(NH4)AlSi3O8·0.5 H2O
monoklin
P21, P21/m

 
 
 
BaAl2Si2O8
monoklin
I2/c

 
 
 
(K,Ba)Al(Si,Al)3O8
monoklin
C2/m

 
 
 
KAlSi3O8
triklin
C1

 
 
 
KAlSi3O8
monoklin
C2/m

 
 
 
(Rb,K)[AlSi3O8]
triklin
P1

 
 
 
(K,Na)(Si,Al)4O8
monoklin
C2/m

 
 
BaNa2Al4Si4O16
orthorhombisch
Iba2

 
 
CaAl2Si2O8
hexagonal
P6/mmm

 
 
K[(Al,Zn)2(As,Si)2O8]
monoklin
I2/c

 
 
KAlSi3O8
hexagonal
P6/mmm

 
 
(Na,Ca)AlSi3O8
tetragonal
I4/m

 
 
BaAl2Si2O8
monoklin
P21/a

 
 
 
 
 

 
 
 
NaAlSi3O8
triklin
C1

 
 
 
(Na,Ca)(Si,Al)4O8
triklin
P1

 
 
 
CaAl2Si2O8
triklin
P1

 
 
 
(Ca,Na)(Si,Al)4O8
triklin
I1

 
 
 
(Ca,Na)(Si,Al)4O8
triklin
C1

 
 
 
(Na,Ca)(Si,Al)4O8
triklin
C1

 
 
NaBSi3O8
triklin
C1

 
 
(Sr,Ca)Al2Si2O8
monoklin
P21/a

 
 
SrNa2Al4Si4O16
orthorhombisch
Iba2

 
 
CaAl2Si2O8
orthorhombisch
P21212

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Actuality: 18. May 2022 - 10:07:43

Other languages

English

Alkali feldspar

German

Alkalifeldspat

CNMNC symbol

Symbol

Afs

Rock part of






 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

 
 
 
 
 
 



 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 


 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 

 
 
 
 
 
 
 




 
 
 
 
 

 
 
 
 
 
 


 
 
 
 
 
 
 
 

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Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 18. May 2022 - 10:07:44

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Alkalifeldspat
Google-Bilder-Suche - search for: Alkalifeldspat
Mineralienatlas.de (Forum) - search for: Alkalifeldspat

English pages

Mindat - search for: Alkali feldspar
Webmineral - search for:Alkali feldspar
Handbook-of-Mineralogy - search for: Alkali feldspar
RRUFF - Raman, XRD and other mineral data - search for: Alkali feldspar
RRUFF - References and PDF downloads - search for: Alkali feldspar
American-Mineralogist-Crystal-Structure-Database - search for: Alkali feldspar
Strahlen.org - search for: Alkali feldspar

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Alkalifeldspat
Crystal-Treasure.com - search for: Alkalifeldspat
Bosse - search for: Alkalifeldspat
Edelsteine Neuburg - Gundolf Fischer - search for: Alkalifeldspat

Locations with GPS information